Battery module

Abstract

To provide a battery module which can improve reaction uniformity and abnormality detection temperature.SOLUTION: A battery module comprises: a battery cell laminate 11 in which a plurality of battery cells are laminated; a container 12 which is filled with a liquid L and houses the battery cell laminate 11; and a pressuring part 13 which applies pressure to the liquid L filled in the container 12. The battery cells are solid-state battery cells. The battery cell laminate 11 is packaged in a packaging material. The liquid L contains oil and an endothermic material. The endothermic reaction starting temperature of the endothermic material ranges from 80 to 190°C.SELECTED DRAWING: Figure 1

Claims

1. A battery cell stack in which multiple battery cells are stacked, A container filled with liquid and containing the battery cell stack, The container comprises a pressurizing unit for pressurizing the liquid filled in the container, The aforementioned battery cell is a solid-state battery cell, The aforementioned battery cell stack is packaged in packaging material. The aforementioned liquid comprises oil and a heat-absorbing material. The aforementioned heat-absorbing material is a battery module in which the endothermic reaction initiation temperature is 80°C or higher and 190°C or lower.

2. The battery module according to claim 1, wherein the heat-absorbing material is a polymer compound, an inorganic salt, or an organic low-molecular-weight compound.

3. The battery module according to claim 1 or 2, wherein the packaging material is a laminate film.

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